Is it too late to fix it?

Like most peope on this website I fired off around 15 applications for vacation schemes last week. I then thought it would be a good idea to go through them all and realised a really embarassing typo on one of the forms.

Like most peope on this website I fired off around 15 applications for vacation schemes last week. I then thought it would be a good idea to go through them all and realised a really embarassing typo on one of the forms (I spelt the firm name wrong) – in fact it was the one of firms I most want to do work experience with. Any advce on what I should do or is it too late to do anything about it?